CN104847392A - Universal plate type hydraulic support - Google Patents
Universal plate type hydraulic support Download PDFInfo
- Publication number
- CN104847392A CN104847392A CN201510273185.8A CN201510273185A CN104847392A CN 104847392 A CN104847392 A CN 104847392A CN 201510273185 A CN201510273185 A CN 201510273185A CN 104847392 A CN104847392 A CN 104847392A
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- Prior art keywords
- support
- base
- hydraulic
- hinged
- axle beam
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- 230000000712 assembly Effects 0.000 claims description 19
- 238000000429 assembly Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 20
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 abstract 6
- 230000037431 insertion Effects 0.000 abstract 6
- 239000003245 coal Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 230000003534 oscillatory effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention relates to a universal plate type hydraulic support. The universal plate type hydraulic support comprises a base, an elevation frame, a connection plate, an insertion groove, a tail beam, an insertion column, a top beam, four vertical hydraulic columns, a front beam, a cantilever beam, a hydraulic control valve component, a valve component support, a gap bridge, a bottom lifting device and a pushing device. The four vertical hydraulic columns are symmetrically arranged between the top beam and the base, the upper end of each vertical hydraulic column is connected with the top beam, and the lower end of each vertical hydraulic column is connected with the base. The upper end of the insertion column is hinged to the top beam, the lower end of the insertion column is in slide fit connection with the insertion groove, and the lower end of the insertion groove is fixedly connected with the base. The front beam and the cantilever beam are sequentially arranged at the front end of the top beam, the tail beam and the connection plate are sequentially hinged to the rear end of the top beam, and the bottom end of the connection plate is hinged to the elevation frame. The pushing device is respectively hinged to the base and a scraper conveyor, the hydraulic control valve component is mounted on the valve component support, and the bottom lifting device is connected onto the gap bridge. A vertical motion trail of the top beam of the support forms a straight line, and modular design, series standardized production and integrated assembly are realized. In addition, the universal plate type hydraulic support has the advantages of technical simplicity, high stability, safety, reliability and high practicality.
Description
Technical field
The present invention relates to a kind of universal board-like hydraulic support, be particularly useful for the roof timbering of underground coal mine coal-face, be also applicable to the occasion that other needs supporting.
Background technology
Mine support equipment is one of requisite equipment of underground coal mine.The support apparatus used in colliery mainly contains the hydraulic support of quadric chain, also double leval jib hydraulic support is claimed, the upper and lower movement locus of double leval jib hydraulic support top beam is a lemniscate, specifically sees " coal mine support handbook " the 5th section of chapter 3 Section three content that Coal Industry Press published in 1993 and publishing house of China Mining University in Eleventh Five-Year Plan institution of higher education national planning teaching material " mining machinery " book of publication in 2010 about support apparatus content.Double leval jib hydraulic support originates in the fifties in last century, and the sixties, technology entered the stage of ripeness, starts the end of the seventies to introduce China's coal-mine industry.Double leval jib hydraulic support Problems existing: one: because its back timber is a lemniscate movement locus, to redesign one to one during each use, and carry out trial-production and the Performance Detection of sample frame, by detect qualified after, just can obtain peace standard card book, finally just can carry out the manufacturing of hydraulic support, such cyclic process, half a year at least, within more than 1 year, could give colliery equipment at most and use, efficiency is quite low; Two: due to the design feature of double leval jib hydraulic support, it cannot realize modularized design, single Analysis of Nested Design and production one to one can only be carried out, design efforts would is heavy, production cycle is long, and labour intensity is large, and cost of production is high, the fringe cost of intermediate link is higher, has had a strong impact on the promotion rate of China's hydraulic support and has promoted the use of face.Three: because double leval jib hydraulic support must carry out single Analysis of Nested Design and the manufacturing one to one, bring very large difficulty to modularization, standardization, seriation, integrated production, the large-scale production of component cannot be carried out, more impossiblely carry out integrative assembly.Therefore, based on the problem of existing double leval jib hydraulic support, change know-why and the technical pattern of existing hydraulic support, have important practical significance and historic significance.
Summary of the invention
Technical problem: the object of the invention is for Problems existing in prior art, a kind of compact conformation is provided, alleviate miner's labour intensity, improve miner safety, reduce cost of production, be easy to the universal board-like hydraulic support promoted, support effect is good.
Technical scheme: universal board-like hydraulic support, is characterized in that: mainly comprise base, raising bracket, connecting plate, slot, tail boom, inserting column, back timber, hydraulic vertical prop, front-axle beam, outrigger, hydraulic control valve assemblies, valve pack support, gap bridge, bottom lifting device and push unit; Described hydraulic vertical prop arranges four, is arranged symmetrically between back timber and base, and the upper end of hydraulic vertical prop is connected with back timber, and lower end is connected with base; Described inserting column upper end by bearing pin and back timber hinged, inserting column lower end is placed in slot, inserting column and slot sliding connection, slot lower end and base affixed; Described back timber front end is sequentially with the front-axle beam and outrigger that can swing up and down; Described top beam rear end is hinged tail boom and connecting plate successively, and the bottom of connecting plate is hinged with the raising bracket be connected on base; Described push unit is located in base, and its two ends are hinged with the drag conveyor in base and coal-face respectively; Described hydraulic control valve assemblies is arranged on valve pack support, and is supported on base front portion by gap bridge, and gap bridge is also connected with bottom lifting device.
Described front-axle beam is provided with the front-axle beam jack that can control it and swing up and down relative to back timber, and the cylinder body of front-axle beam jack and motion bar are hinged with back timber, front-axle beam respectively.
Described outrigger is provided with the outrigger jack that can control it and swing up and down relative to front-axle beam, and the cylinder body of outrigger jack and motion bar are hinged with front-axle beam, outrigger respectively.
Described inserting column and slot form flashboard mechanism, are arranged at the rear portion of support, and are positioned at the center of support width.
Described hydraulic control valve assemblies is made up of one group of manual operating valve or electric liquid Remote control valve, one way valve, safety valve, pipe fitting and seal.
Beneficial effect: the upper and lower movement locus of the universal board-like hydraulic support top beam of the present invention is straight line, modularized design can be realized, seriation, standardized production, integrative assembly, in module, maximum height hydraulic support can cover the hydraulic support compared with low height, decreases intermediate link, improves production efficiency, reduce cost of production, the Rapid Popularization of hydraulic support can be realized.According to coal mine roof plate pressure with highly arrange some modules, the some identical working resistances of each modular design but highly different hydraulic support specifications, and height specification meets seriation standard, the principle of lower height support is covered with most high trestle, the trial-production of maximum height specification sample frame, sample frame are detected, pacify mark evidence obtaining work, comparatively small-sized support is capped, and decreases middle production link, shortens the production cycle.Major advantage:
(1) the universal board-like hydraulic support of the present invention can realize seriation, standardized production, component are made standard component, the support of the differing heights specification of standard series can be formed according to coal seam situation, colliery needs any specification just to select any specification, carry out integrative assembly production after choosing, improve production efficiency;
(2) the universal board-like hydraulic support of the present invention can be accomplished scale production, and each component can form production line, to realize producing quickly and efficiently on a large scale, reaches the object meeting colliery large-scale promotion hydraulic support;
(3) the universal board-like hydraulic support of the present invention can be applicable to fully-mechanized mining working, also can be used in blast mining face, and its structure is simple, and good stability is easy to use and reliable, has practicality widely.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, 1. base, 2. raising bracket, 3. connecting plate, 4. slot, 5. tail boom, 6. inserting column, 7. back timber, 8. bearing pin, 9. hydraulic vertical prop, 10. front-axle beam jack, 11 front-axle beams, 12. outrigger jack, 13. outriggers, 14 hydraulic control valve assemblies, 15. valve pack supports, 16. pass a bridge, 17. bottom lifting devices, 18. push units.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
As shown in Figure 1, universal board-like hydraulic support of the present invention, primarily of base 1, raising bracket 2, connecting plate 3, slot 4, tail boom 5, inserting column 6, back timber 7, hydraulic vertical prop 9, front-axle beam 11, outrigger 13, hydraulic control valve assemblies 14, valve pack support 15, pass a bridge 16, bottom lifting device 17, push unit 18 forms.Described back timber 7, front-axle beam 11, outrigger 13, inserting column 6, tail boom 5, slot 4, connecting plate 3, raising bracket 2, base 1, valve pack support 15, gap bridge 16 are welded by steel plate or shaped steel.Described hydraulic control valve assemblies 14 is made up of one group of manual operating valve or electric liquid Remote control valve, one way valve, safety valve, pipe fitting and seal, and hydraulic control valve assemblies 14 is manipulation centers of each action of support, can manual operation or electric liquid Long-distance Control.Four described hydraulic vertical props 9 are arranged symmetrically between back timber 7 and base 1, and the upper end of hydraulic vertical prop 9 is connected with back timber 7, and lower end is connected with base 1; Described inserting column 6 upper end is hinged by bearing pin 8 and back timber 7, and inserting column 6 lower end is placed in slot 4, slot 4 lower end and base 1 affixed; Back timber 7 is hinged with front-axle beam 11, and back timber 7 has the front-axle beam jack 10 be connected with front-axle beam 9, front-axle beam 11 with the telescopic oscillating of front-axle beam jack 10, front-axle beam jack 10 two ends respectively with front-axle beam 11 and back timber 7 hinged; Front-axle beam 11 has outrigger 13, and outrigger 13 is provided with the outrigger jack 12 making it swing, outrigger jack 12 respectively with outrigger 13 and front-axle beam 11 hinged; Described tail boom 5 upper end and back timber 7 hinged, the upper end thereof of lower end and connecting plate 3, the upper end thereof of connecting plate 3 lower end and raising bracket 2, raising bracket 2 lower end and base 1 affixed.Described base 1 welds gap bridge 16, gap bridge 16 installs valve pack support 15 and bottom lifting device 17, valve pack support 15 is installed hydraulic control valve assemblies 14; Described push unit 18 is located in base 1, and its two ends are hinged with the drag conveyor in base 1 and coal-face respectively.Hydraulic vertical prop 9 upper and lower flexible time, back timber 7, inserting column 6, tail boom 5 etc. are elevated thereupon, and tail boom 5 is swung around the jointed shaft with back timber 7, and connecting plate 3 is thereupon around swinging with the jointed shaft on raising bracket 2, and tail boom 5 is also around the jointed shaft opposing oscillatory with connecting plate 3; Back timber 7 is hinged with front-axle beam 11, the two ends of front-axle beam jack 10 respectively with back timber 7 and front-axle beam 11 hinged, front-axle beam 11 swings with the flexible of front-axle beam jack 10; Push unit 18 is the parts for passing drag conveyor and mobile hydraulic support itself, its respectively with base 1 and drag conveyor hinged; Hydraulic control valve assemblies 14 is the manipulation centers handling and control highly pressurised liquid, four hydraulic vertical props 9 on support, front-axle beam jack 10, outrigger jack 12, bottom lifting device 17, side guard board jack etc. on push unit 18 and back timber 7 and tail boom 5 carrys out maneuvering and control by hydraulic control valve assemblies 14, hydraulic control valve assemblies 14 is installed on valve pack support 15, valve pack support 15 is connected on gap bridge 16, gap bridge 16 and base 1 are welded as a whole, and entirety constitutes universal board-like hydraulic rack structure.
The course of work:
When support rises frame, by operation hydraulic control valve assemblies 14, highly pressurised liquid enters the large chamber of four hydraulic vertical props 9, back timber 7, inserting column 6, tail boom 5 rise, front-axle beam 11, front-axle beam jack 10, outrigger 13, outrigger jack 12 rise thereupon, and inserting column 6 vertically rises along slot 4 inwall, and tail boom 5 rotates around the jointed shaft with back timber 7, tail boom 5 is around the jointed shaft opposing oscillatory with connecting plate 3 simultaneously, and connecting plate 3 rises around swinging with the jointed shaft on raising bracket 2.
When frame falls in support, by operation hydraulic control valve assemblies 14, highly pressurised liquid enters the loculus of four hydraulic vertical props 9, back timber 7, inserting column 6, tail boom 5 decline, front-axle beam 11, front-axle beam jack 10, outrigger 13, outrigger jack 12 decline thereupon, inserting column 6 vertically declines along slot 4 inwall, tail boom 5 rotates around the jointed shaft with back timber 7, and tail boom 5 is around the jointed shaft opposing oscillatory with connecting plate 3 simultaneously, and connecting plate 3 declines around swinging with the jointed shaft on raising bracket 2.
During support pushing and sliding, by operation hydraulic control valve assemblies 14, highly pressurised liquid enters the large chamber of jack in push unit 18, passes drag conveyor.
When support moves frame, drag conveyor is fixed, and by operation hydraulic control valve assemblies 14, highly pressurised liquid enters the loculus of jack in push unit 18, passes hydraulic support.
Completing of support four actions has all been come by operation hydraulic control valve assemblies 14, and the sequence of movement of support determines according to work plane field condition, and support often completes four actions once, and support just completes a working cycles.
Claims (5)
1.
a kind ofuniversal board-like hydraulic support, is characterized in that: mainly comprise base, raising bracket, connecting plate, slot, tail boom, inserting column, back timber, hydraulic vertical prop, front-axle beam, outrigger, hydraulic control valve assemblies, valve pack support, gap bridge, bottom lifting device and push unit; Described hydraulic vertical prop arranges four, is arranged symmetrically between back timber and base, and the upper end of hydraulic vertical prop is connected with back timber, and lower end is connected with base; Described inserting column upper end by bearing pin and back timber hinged, inserting column lower end is placed in slot, inserting column and slot sliding connection, slot lower end and base affixed; Described back timber front end is sequentially with the front-axle beam and outrigger that can swing up and down; Described top beam rear end is hinged tail boom and connecting plate successively, and the bottom of connecting plate is hinged with the raising bracket be connected on base; Described push unit is located in base, and its two ends are hinged with the drag conveyor in base and coal-face respectively; Described hydraulic control valve assemblies is arranged on valve pack support, and is supported on base front portion by gap bridge, and gap bridge is also connected with bottom lifting device.
2. the universal board-like hydraulic support of one according to claim 1, is characterized in that: described front-axle beam is provided with the front-axle beam jack that can control it and swing up and down relative to back timber, and the cylinder body of front-axle beam jack and motion bar are hinged with back timber, front-axle beam respectively.
3. the universal board-like hydraulic support of one according to claim 1, is characterized in that: described outrigger is provided with the outrigger jack that can control it and swing up and down relative to front-axle beam, and the cylinder body of outrigger jack and motion bar are hinged with front-axle beam, outrigger respectively.
4. the universal board-like hydraulic support of one according to claim 1, is characterized in that: described inserting column and slot form flashboard mechanism, are arranged at the rear portion of support, and are positioned at the center of support width.
5. the universal board-like hydraulic support of one according to claim 1, is characterized in that: described hydraulic control valve assemblies is made up of one group of manual operating valve or electric liquid Remote control valve, one way valve, safety valve, pipe fitting and seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510273185.8A CN104847392A (en) | 2015-05-26 | 2015-05-26 | Universal plate type hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510273185.8A CN104847392A (en) | 2015-05-26 | 2015-05-26 | Universal plate type hydraulic support |
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| CN104847392A true CN104847392A (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510273185.8A Pending CN104847392A (en) | 2015-05-26 | 2015-05-26 | Universal plate type hydraulic support |
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| Country | Link |
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| CN (1) | CN104847392A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401634A (en) * | 2016-11-24 | 2017-02-15 | 安徽理工大学 | Hydraulic supporting frame achieving separate pressure relief of front pillar and rear pillar and control method for same |
| CN106437809A (en) * | 2016-11-24 | 2017-02-22 | 安徽理工大学 | Grading pressure relief hydraulic support and control method thereof |
| WO2017071000A1 (en) * | 2015-10-29 | 2017-05-04 | 中国矿业大学 | Suspension hydraulic support |
| CN111963758A (en) * | 2020-08-25 | 2020-11-20 | 扬州龙鑫科技有限公司 | Mechanical locking device for complete set of valve rod of hydraulic support |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3700692A1 (en) * | 1987-01-13 | 1988-07-21 | Gewerk Eisenhuette Westfalia | Shield-type powered support assembly, in particular for the electrohydraulically controlled face support |
| GB2237318A (en) * | 1989-10-24 | 1991-05-01 | Meco Mining Equip | A mine roof support |
| CN2128308Y (en) * | 1992-08-14 | 1993-03-17 | 煤炭科学研究总院北京开采研究所 | Caving or network laying hydraulic chock |
| CN2141840Y (en) * | 1992-06-11 | 1993-09-08 | 山西矿业学院 | Semi-unloading single swing stem hydraulic chock |
| CN102704977A (en) * | 2012-07-09 | 2012-10-03 | 中国矿业大学 | Universal-type statically indeterminate hydraulic support |
| CN204646286U (en) * | 2015-05-26 | 2015-09-16 | 徐州神安矿山机械科技有限公司 | Universal board-like hydraulic support |
-
2015
- 2015-05-26 CN CN201510273185.8A patent/CN104847392A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3700692A1 (en) * | 1987-01-13 | 1988-07-21 | Gewerk Eisenhuette Westfalia | Shield-type powered support assembly, in particular for the electrohydraulically controlled face support |
| GB2237318A (en) * | 1989-10-24 | 1991-05-01 | Meco Mining Equip | A mine roof support |
| CN2141840Y (en) * | 1992-06-11 | 1993-09-08 | 山西矿业学院 | Semi-unloading single swing stem hydraulic chock |
| CN2128308Y (en) * | 1992-08-14 | 1993-03-17 | 煤炭科学研究总院北京开采研究所 | Caving or network laying hydraulic chock |
| CN102704977A (en) * | 2012-07-09 | 2012-10-03 | 中国矿业大学 | Universal-type statically indeterminate hydraulic support |
| CN204646286U (en) * | 2015-05-26 | 2015-09-16 | 徐州神安矿山机械科技有限公司 | Universal board-like hydraulic support |
Non-Patent Citations (2)
| Title |
|---|
| 孙泽勋等: "垂直插板式放顶煤液压支架的结构设计与水平受力分析", 《煤矿机械》 * |
| 王成毅: "ZF15000尾梁插板式放顶煤液压支架的选型设计", 《科技情报开发与经济》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017071000A1 (en) * | 2015-10-29 | 2017-05-04 | 中国矿业大学 | Suspension hydraulic support |
| AU2015341421B1 (en) * | 2015-10-29 | 2017-05-25 | China University Of Mining And Technology | Float-swing hydraulic support |
| US9926784B2 (en) | 2015-10-29 | 2018-03-27 | China University Of Mining And Technology | Float-swing hydraulic support |
| CN106401634A (en) * | 2016-11-24 | 2017-02-15 | 安徽理工大学 | Hydraulic supporting frame achieving separate pressure relief of front pillar and rear pillar and control method for same |
| CN106437809A (en) * | 2016-11-24 | 2017-02-22 | 安徽理工大学 | Grading pressure relief hydraulic support and control method thereof |
| CN106401634B (en) * | 2016-11-24 | 2018-06-29 | 安徽理工大学 | A kind of front and rear column split release hydraulic support |
| CN106437809B (en) * | 2016-11-24 | 2018-08-03 | 安徽理工大学 | It is classified release hydraulic support and hydraulic support control method |
| CN111963758A (en) * | 2020-08-25 | 2020-11-20 | 扬州龙鑫科技有限公司 | Mechanical locking device for complete set of valve rod of hydraulic support |
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| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Bingwen Inventor after: Wang Jianwu Inventor after: Hong Jianyun Inventor after: Liu Jun Inventor before: Li Bingwen Inventor before: Wang Jianwu Inventor before: Hong Jianyun Inventor before: Liu Jun |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20151103 Address after: 221116 Xuzhou University Road,, Jiangsu, China University of Mining and Technology Applicant after: China University of Mining & Technology Address before: 221008 Jiangsu province Quanshan District of Xuzhou Software Park Building No. 2 north two 201-2 room Applicant before: Xuzhou Shen An mining machinery Science and Technology Ltd. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150819 |
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| RJ01 | Rejection of invention patent application after publication |